JP4529938B2 - Bathroom drainage structure - Google Patents

Description

  The present invention relates to a technique for joining and draining drainage from a bathtub and drainage from a bathtub floor pan.

  Conventionally, as drainage in bathrooms such as bathroom units, drainage from the bathtub and drainage from the floor pan for the bathtub where the bathtub is installed are joined together and drained together. As an example, Patent Document 1 is known.

  In the conventional example shown in the above-mentioned patent document 1, a bathtub drain pan trap part for partitioning the inside of a bathtub drain trap part for draining a bathtub by a partition and partitioning from the bathtub drain trap part is provided. The outlet of the bathtub floor pan drain trap section is connected to the drain pipe near the connection section of the drain pipe to the outlet of the trap section, and the drain from the bathtub drain trap section and the drain trap section for the bathtub floor pan are connected. It is designed to join the waste water.

  In the above-mentioned conventional example, the bathtub floor pan drain trap part is provided with a sealing water pool, and the sealing water pool is divided into an upstream water pool part and a downstream water pool part by a sealing water partition. In addition, a communication portion is formed at the lower end portion of the sealing water partition for communicating the upstream water pool portion and the downstream water pool portion. And the area of the water surface of a downstream water pool part is made larger than the area of the water surface of an upstream water pool part. Here, when a large amount of drainage from the bathtub flows through the drainage pipe line through the bathtub drain trap part, the space above the water surface on the downstream pool side of the bathtub floor drain trap part becomes negative pressure, and the bathtub There is a problem that the water in the water trap for sealing in the floor pan drain trap part is pulled and flows out, and the sealed water in the bathtub floor pan drain trap part is broken. Therefore, by making the area of the water surface of the downstream water pool part larger than the area of the water surface of the upstream water pool part, it is difficult to be pulled when negative pressure acts on the water surface of the downstream water pool part. It is.

However, if the area of the water surface of the downstream water pool portion is larger than the area of the water surface of the upstream water pool portion as in the above conventional example, when the negative pressure is eliminated, the downstream water pool having a large area is obtained. Since the backflow water flows over the entire surface, the amount of water flowing back to the bathtub floor drain trap part increases, and there is a risk that water may be ejected from the small surface of the upstream pool.
JP-A-2005-282123

  The present invention was invented in view of the above-mentioned conventional problems, and when flowing a large amount of drainage from the bathtub drain trap part, the water in the bathtub floor drain trap part is drawn by negative pressure. An object of the present invention is to provide a bathroom drainage structure that makes it difficult to flow out and makes it difficult for drainage from the bathtub drain trap part to flow backward to the bathtub floor drain trap part when the negative pressure is released. It is.

  In order to solve the above problems, the drainage structure of a bathroom according to the present invention is a bathtub drain trap section 2 through which drainage from the bathtub 1 flows and a bathtub floor pan through which drainage from the bathtub floor pan 3 in which the bathtub 1 is installed flows. A drainage trap part 4 is provided, and a first drainage channel 7 through which drainage discharged from the bathtub drainage trap unit 2 flows and a second drainage channel 8 through which drainage discharged from the bathtub floor pan drainage trap unit 4 flow are joined. The water is collected in a common drain pipe 11 and is drained by a common drain pipe 11, and is provided with a sealing water pool 4 a in a bathtub floor pan drain trap section 4, and the sealing water pool 4 a is connected to an upstream water pool section 4 c. And a downstream water reservoir 4d, and a communication portion 4e that communicates the lower portion of the upstream water reservoir 4c and the lower portion of the downstream water reservoir 4d, and the area of the water surface W1 of the downstream water reservoir 4d. Is larger than the area of the water surface W2 of the upstream water reservoir 4c. An inlet portion 8a of the second drainage channel 8 is provided on the one side upper portion of the downstream water pool portion 4d, and a lower end position of the inlet portion 8a is set as an upper end position that becomes the water surface W1 level of the downstream water pool portion 4d, A discharge guide portion 4i whose one end is in communication with the inlet portion 8a and whose lower end opening 4g at the other end is opposed to a part of the water surface W1 of the downstream water reservoir 4d via a small gap 4h is provided. It is characterized by comprising.

  Thus, since the area of the water surface W1 of the downstream water pool part 4d is larger than the area of the water surface W2 of the upstream water pool part 4c, a large amount of drainage from the bathtub 1 merges through the bathtub drain trap part 2. Even if a negative pressure is generated when flowing into the section 10, water in the bathtub floor pan drain trap section 4 can be hardly drawn, and an inlet section 8a is provided on one side upper part of the downstream water pool section 4d. The lower end position of the inlet portion 8a is the upper end position at the water level W1 level of the downstream water reservoir 4d, one side portion is connected to the inlet portion 8a, and the other lower end opening portion 4g is the downstream water reservoir. Since the discharge guide part 4i which opposes through the small gap | interval 4h is provided in a part of water surface W1 of the part 4d, when negative pressure is eliminated, the waste_water | drain from the bathtub 1 is for a bathtub floor pan. Even if it is going to flow back into the drain trap part 4, the backflow water is stored on the downstream side. Only a part of the water surface W1 of the part 4d flows backward only from the discharge guide part 4i facing through the small gap 4h, and therefore the amount of water flowing back is extremely small despite the large water surface W1 of the downstream water pool part 4d, The backflow prevention effect is excellent.

  Further, most of the water surface W1 of the downstream water reservoir 4d is covered with the ceiling portion 4k through the small gap 4j and small above the portion not covered with the ceiling portion 4k of the water surface W1 of the downstream water reservoir 4d. It is preferable that the lower end opening 4g of the discharge guide portion 4i is opposed to the gap 4h.

  With such a configuration, water flowing backward from the discharge guide portion 4i flows into the small gap 4h between the lower end opening 4g of the discharge guide portion 4i and the water surface W1 of the downstream water pool portion 4d, and the downstream water Even if an attempt is made to flow backward over the entire surface of the water surface W1 of the reservoir 4d, the water surface W1 of the downstream water reservoir 4d is covered with the ceiling 4k through the small gap 4j, so the water surface of the downstream water reservoir 4d The amount of water that flows back over the entire surface of W1 is extremely small.

  Moreover, it is preferable that the part facing the lower end opening part 4g of the discharge guide part 4i is shallower than the other part about the depth from the water surface W1 to the bottom part 4f in the downstream water pool part 4d.

  By setting it as such a structure, since the water which flows backward from the lower end opening part 4g of the discharge guide part 4i hits the bottom part 4f, the amount of water which flows backward can be decreased.

  In the present invention, when a large amount of drainage from the bathtub drains from the bathtub drain trap as described above, even if negative pressure is generated, the water in the bathtub floor drain trap part is drawn and difficult to flow out. When the pressure is released, there is an advantage that the drainage from the bathtub drain trap part can hardly flow backward to the bathtub floor pan drain trap part.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  The bathroom unit A constituting the bathroom is provided with an entrance / exit frame having a wall panel and a door around a floor pan composed of a floor pan 3 for a bathtub in which the bathtub 1 is installed and a washing floor pan 5. A ceiling panel is arranged at the upper end of the part surrounded by the panel and the entrance / exit frame.

  There are three types of drainage from the bathroom unit A: drainage of hot water from the bathtub 1, drainage of hot water from the floor pan 3 for the bathtub where the bathtub 1 is installed, and drainage of hot water from the wash floor floor pan 5. In the present invention, the three kinds of traps through which the three kinds of wastewater flow individually, that is, the drainage from the bathtub drain trap section 2 through which the drainage from the bathtub 1 flows and the floor pan 3 for the bathtub in which the bathtub 1 is installed are discharged. A draining trap section 4 for flowing bathtub floor pan and a washing ground drain trap section 6 through which drainage from the washing floor floor pan 5 flows are provided.

  In the embodiment shown in the accompanying drawings, the trap device 22 described below is provided with a bathtub drain trap part 2, a bathtub floor drain trap part 4, and a washing place drain trap part 6.

  As shown in FIGS. 2 to 4, the trap device 22 includes a bathtub-side trap body 23, a bathtub-side fixing upper cylinder 24, a bathtub-side sealing cylinder 25, a washing-side trap body 16, and a body lid 43. The washing station side fixing upper cylinder 15 and the washing area side sealing cylinder 17 are constituted.

  The bathtub-side trap main body 23 is the main body of the bathtub drain trap part 2, and has a bottomed cylindrical shape with an upper opening as shown in FIG. 7, and a flange portion 26 is integrally provided on the outer periphery of the upper end opening. In addition, a first drain tube portion 27 communicating with the inside of the bathtub-side trap body portion 23 is integrally projected outwardly on the side wall of the bathtub-side trap body portion 23 having a bottomed cylindrical shape. Moreover, the internal thread part is formed in the inner peripheral upper end part of the bathtub side trap main-body part 23, and the inner cylinder part 28 toward the upper direction in the position eccentric from the center of the bottom part of the bathtub-side trap main body part 23 Is protruded integrally upward, and further, a second drain cylinder 29 having one end opened into the inner cylinder 28 extends along the bottom of the bathtub-side trap body 23. And projecting integrally in the lateral direction outwardly. In the portion along the bottom of the bathtub-side trap body 23 of the second drain cylinder 29, the bottom of the bathtub-side trap body 23 also serves as the bottom of the second drain cylinder 29 as shown in FIG. Yes. In addition, a plurality of protrusions 53 project upward from the bottom of the bathtub-side trap body 23, and the upper surface of the protrusion 53 and the bottom of the bathtub-side trap body 23 of the second drainage cylinder 29 are provided. The upper surface of the portion along the line is at the same level.

  The bathtub-side fixing upper cylinder 24 is integrally provided with a flange portion 30 at the upper end and is provided with a male screw portion on the outer peripheral portion. The bathtub-side fixing upper cylinder 24 is inserted from above into a hole 31 provided in the bathtub floor pan 3, and is arranged so that the upper opening communicates with the hole 31 on the lower surface side of the bathtub floor pan 3. 1 is screwed into the female threaded portion at the inner peripheral upper end of the portion 23, and the bathtub floor pan 3 is sandwiched by the flange portions 30 and 26 from above and below, so that the bathtub floor pan 3 is attached to the bathtub floor pan 3 as shown in FIG. The trap body 23 and the bathtub-side fixing upper cylinder 24 are fixedly attached.

  As shown in FIG. 8, the bathtub-side seal tube 25 has a fitting portion 25 a whose upper end portion has a larger outer diameter than the lower portion, and a packing 33 is provided on the outer periphery of the fitting portion 25 a. The upper end is closed by an integrally formed lid plate 32, and a bath drain hole 34 and a floor pan drain hole 35 are provided at a position eccentric from the lid plate 32. FIG. As shown in FIG. 1, a hanging cylinder portion 36 is integrally suspended downward from the floor pan drain hole 35.

  The bathtub-side sealing cylinder 25 is hermetically fitted by being inserted into the bathtub-side fixing upper cylinder 24 from above and the packing 33 provided in the fitting portion 25 a being pressed against the inner peripheral surface of the bathtub-side fixing upper cylinder 24. . In this case, as shown in FIG. 2, the bathtub-side sealing tube 25 is sealed until the lower end of the bathtub-side sealing tube 25 hits the upper surface of the projection 53 and the upper surface of the portion along the bottom of the bathtub-side trap body 23 of the second drainage tube 29. By pushing in the water bottle 25, the lower end of the bathtub-side water sealing cylinder 25 can be positioned reliably, and a certain sealing water height can be secured. Accordingly, when the bathtub-side sealing cylinder 25 is attached to the bathtub-side fixing upper cylinder 24 by screwing, the sealing water height varies depending on the screwing depth. Compared to the conventional example in which the length of the bathtub-side water seal tube 25 must be given a certain length in advance so that the seal water height (5 cm) specified by law can be secured. Even if the length of the bathtub-side sealing tube 25 is shortened, the sealing water height (5 cm) stipulated by the law can be secured, so that the height of the device can be kept low and the thickness can be reduced. Become.

  By fitting the bathtub-side sealed cylinder 25 into the bathtub-side fixing upper cylinder 24 in an airtight manner as described above, the bathtub-side sealed cylinder 25 is provided between the lower end of the bathtub-side sealed cylinder 25 and the bottom of the bathtub-side trap body 23. 25, a communication portion 38 is formed to communicate the gap 37 between the inner surface of the bathtub-side trap main body portion 23 and the outer surface of the bathtub-side seal tube 25. The drainage hole 34 for the bathtub, the bathtub-side seal tube 25, the communication part 38, and the 1st drain cylinder part 27 are connecting.

  In addition, with the bathtub-side sealing cylinder 25 fitted in the bathtub-side fixing upper cylinder 24 in an airtight manner, a drooping cylinder portion 36 that hangs down from the cover plate 32 of the bathtub-side sealing cylinder 25 is fitted into the inner cylinder portion 28, A packing 40 is interposed between the cylindrical portion 36 and the inner cylindrical portion 28 or between the inner cylindrical portion 28 and the lower surface of the cover plate 32 and is hermetically connected to each other. The floor pan drain hole 35, the hanging cylindrical portion 36, and the inner cylindrical portion 28, the 2nd drain cylinder part 29 is connecting.

  As shown in FIG. 9, the washing field side trap body 16 has a bottomed cylindrical shape with an open top, and a substantially L-shaped cylindrical shape is formed at the lower part of the washing field side trap body 16 along one half of the outer periphery. The rising cylindrical portion 20a of the connecting portion 20 is integrally formed, and the rising cylindrical portion 20a has a larger cross-sectional area as it extends upward, and the washing place side trap body so as to communicate with the upper opening of the rising cylindrical portion 20a. A first drainage channel 7 is integrally formed along one half of the upper outer peripheral portion of the portion 16.

  In addition, a third drainage channel 9 having a groove shape with an upper opening communicating with the washing station side trap body 16 is integrally formed along the other half of the other outer peripheral portion of the upper part of the washing station side trap body 16. Further, a rising cylindrical portion 21a of the connection portion 21 having a substantially L-shaped cylindrical shape is formed integrally with the outside of the third drainage channel 9, and is further continuous with the downstream end portion of the rising cylindrical portion 21a of the connection portion 21. Thus, the second drainage channel 8 is integrally formed.

  The first drainage channel 7, the second drainage channel 8, and the third drainage channel 9 are arranged side by side at substantially the same level. The downstream end portions of the first drainage channel 7, the second drainage channel 8, and the third drainage channel 9 gather at one place and merge at a junction 10 provided at one end of the washing place side trap body 16.

  Washed side trap body having a bottomed cylindrical shape integrally formed with the first drainage channel 7 having the groove shape, the rising cylinder portion 21a, the second drainage channel 8 communicating with the rising cylinder portion 21a, and the third drainage channel 9 A main body lid 43 as shown in FIG. 10 is attached to the upper end of the portion 16, and the upper openings of the first drainage channel 7, the second drainage channel 8, and the third drainage channel 9 having a groove shape are closed. A hole 44 provided in the lid 43 communicates with the upper opening of the bottom-washed cylindrical washing place side trap body 16.

  The horizontal tube portion of the connecting portion 20 is connected to the first drain tube portion 27 projecting laterally from the bathtub-side trap body portion 23, and the connection portion 21 extends from the bathtub-side trap body portion 23. The first drainage cylinder portion 27 projecting in the lateral direction is connected in communication.

  The level of the communicating portion with the first drainage channel 7 which is the upper end of the connecting portion 20 is in contact with the upper surface of the projection 53 and the upper surface of the portion along the bottom of the bathtub-side trap body portion 23 of the second drainage cylinder portion 29. The level is a certain height higher than the lower end of the bathtub-side sealing cylinder 25 positioned (that is, 5 cm which is the sealing water height determined by law, or slightly higher than 5 cm). Therefore, a puddle for sealing water communicating with the inside and outside of the bathtub-side sealing cylinder 25 is formed via the communication portion 38 between the lower end of the bathtub-side sealing cylinder 25 and the bottom of the bathtub-side trap body 23. The bathtub drain trap part 2 is comprised.

  Further, the level of the communication portion with the second drainage channel 8 which is the upper end of the connection portion 21 is a certain height from the communication portion with the second drainage cylinder portion 29 at the lower end portion of the drooping cylinder portion 36 (that is, determined by law). The height of the sealed water is 5 cm or slightly higher than 5 cm). Therefore, the drainage for bathtub floor pan is formed by forming the sealing water pool 4a over the inner cylinder part 28, the second drainage cylinder part 29, and the L-shaped cylindrical connection part 21 with the second drainage cylinder part 29 as the lowermost end. A trap unit 4 is configured.

  Here, as shown in FIG. 3, in the water reservoir 4a for sealing water of the bathtub floor pan drain trap part 4, the inner cylinder part 28 serves as the upstream water pool part 4c, and the connection part 21 having an L-shaped cylindrical shape is downstream. The side drainage portion 4d is formed, and the second drainage cylinder portion 29 is a communication portion 4e that communicates the lower portion of the upstream-side reservoir portion 4c and the lower portion of the downstream-side reservoir portion 4d.

  The rising cylindrical portion 21a of the L-shaped connecting portion 21 constituting the downstream water reservoir 4d is integrally formed so as to communicate with the second drainage channel 8, and this rising cylindrical portion 21a is shown in FIG. The area of the water surface W1 of the downstream water reservoir 4d (that is, the opening area of the upper opening of the rising cylinder portion 21a) in a state where the cross-sectional area is larger toward the upper side and water is accumulated due to sealing water, It is larger than the area of the water surface W2 of the upstream water reservoir 4c (that is, the opening area of the upper opening of the inner cylinder 28). In the embodiment shown in FIG. 3, the bottom portion 4f of the downstream water reservoir 4d (the bottom surface portion of the rising cylinder portion 21a) is inclined so as to be lower toward the communication portion 4e side and gradually increase as it is away from the communication portion 4e side. The leading end reaches the upper end of the downstream water reservoir 4d. An inlet portion 8a of the second drainage channel 8 is formed at an upper portion of the portion where the inclined bottom portion 2k, which is one side of the downstream water pool portion 4d, reaches the upper end of the downstream water pool portion 4d. The lower end position of the inlet portion 8a of the drainage channel 8 is the water surface W1 level of the downstream water pool portion 4d, that is, the upper end position of the downstream water pool portion 4d. A discharge guide portion 4 i is integrally projected from the inlet portion 8 a of the second drainage channel 8 toward the upstream side.

  The discharge guide portion 4i is integrally connected so that one side portion thereof communicates with the inlet portion 8a, and the lower end opening portion 4g at the other end is opened downward to form a portion of the water surface W1 of the downstream water pool portion 4d. It faces the part via a small gap 4h. Here, since the bottom portion 4f of the downstream water pool portion 4d is inclined as described above, the depth from the water surface to the bottom portion 4f in the downstream water pool portion 4d is opposite to the lower end opening 4g of the discharge guide portion 4i. The part to do is the shallowest than the other parts.

  Further, a ceiling portion 4k is provided via a small gap 4j above a large portion of the water surface W1 of the downstream water pool portion 4d (that is, a portion excluding the portion facing the lower end opening 4g of the discharge guide portion 4i). It is. The ceiling portion 4k is provided below the upper end of the inlet portion 8a, and preferably provided at the same or substantially the same height as the discharge guide portion 4i as shown in FIG. 3 (that is, the small gap 4j and the small gap 4h). Are the same vertical length). As shown in FIG. 10, the ceiling portion 4k that covers most of the water surface W1 of the downstream water reservoir 4d through the small gap 4j is provided with a recess 43a in the main body lid 43, and the bottom of the concave portion 43a of the main body lid 43 is above the bottom. The ceiling part 4k is comprised.

  Moreover, each downstream end of the said 1st drainage channel 7, the 2nd drainage channel 8, and the 3rd drainage channel 9 becomes the exit parts 12, 13, and 14, respectively, and the three exit parts 12, 13, and 14 are one place. Open to and communicate with the tubular confluence 10 gathered together. A drain pipe 11 is connected to the junction 10. In the embodiment shown in the figure, the upstream end of the drain pipe 11 is fitted and connected to the cylindrical junction 10, so that the end of the drain pipe 11 is a substantial drainage junction. That is, the three outlet portions 12, 13, and 14 merge at one merge portion 10, and the merge portion 10 also serves as a connection portion with the drain pipe 11.

  Here, the discharge direction of the drainage from each of the outlet portions 12, 13, and 14 to the merging portion 10 is substantially parallel.

  Further, the arrangement of the three outlet portions 12, 13, 14 arranged side by side is such that the outlet portion 12 of the first drainage channel 7 is juxtaposed in the lateral direction on one side of the outlet portion 14 of the third drainage channel 9. The outlet portion 13 of the second drainage channel 8 is juxtaposed in the lateral direction on the other side in the lateral direction of the outlet portion 14 of the third drainage channel 9.

  Furthermore, as shown in FIGS. 6 and 9, the lower end of the outlet portion 12 of the first drainage channel 7 and the lower end of the outlet portion 13 of the second drainage channel 8 are more than the lower end of the outlet portion 14 of the third drainage channel 9. A step portion 39 is provided between the lower end of the outlet portion 12 of the first drainage channel 7 and the lower end of the outlet portion 13 of the second drainage channel 8 and the bottom portion of the merging portion 10.

  Further, a protrusion 45 is provided on the bottom of the washing place side trap body 16 upward.

  The washing tube side fixing upper cylinder 15 is integrally provided with a flange portion 46 at the upper end and a male screw portion on the outer peripheral portion. The washing-place-side fixing upper cylinder 15 is inserted from above into the hole 47 provided in the washing-room floor pan 5, and the body lid 43 is disposed on the lower surface side of the washing-room floor pan 5 so that the hole 44 communicates with the hole 47. 1, the washing floor floor pan 5 is sandwiched between the flange 46 and the main body lid 43 from above and below as shown in FIG. The trap body 16 and the washing-place-side fixing upper cylinder 15 are fixedly attached.

  The washing station side sealing cylinder 17 has a fitting part 17a whose upper end portion has an outer diameter larger than that of the lower part. A packing 48 is provided on the outer periphery of the fitting part 17a. The upper end of the washing station side sealing cylinder 17 is a drainage hole for washing station. 50.

  The washing area side sealing cylinder 17 is inserted into the washing area side fixing upper cylinder 15 from above, and the packing 48 provided in the fitting portion 17a is pressed into contact with the inner peripheral surface of the washing area side fixing upper cylinder 15 so as to be airtightly fitted. . In this case, the lower end of the washing station side sealing cylinder 17 can be surely positioned by pushing the washing station side sealing cylinder 17 until the lower end of the washing station side sealing cylinder 17 hits the upper surface of the projection 45, and a certain sealing height is secured. it can. Accordingly, when the washing place side sealing cylinder 17 is attached to the washing place side fixing upper cylinder 15 by screwing, the sealing water height varies depending on the screwing depth. Compared to the conventional example in which the length of the water-sealing-side water sealing tube 17 has to be provided with a margin in advance so that the sealing water height (5 cm) prescribed by law can be secured. Even if the length of the washing-side sealing tube 17 is shortened, the sealing water height (5 cm) stipulated by the law can be secured, so that the height of the device can be kept low and the thickness can be reduced. Become.

  As described above, the washing station side sealing cylinder 17 is hermetically fitted into the washing station side fixing upper cylinder 15 so that the washing station side sealing cylinder is interposed between the lower end of the washing station side sealing cylinder 17 and the bottom of the washing station side trap body 16. 17, a communication part 19 is formed to communicate the gap 18 between the inside of the washing body side trap body 16 and the outer surface of the washing room side sealing cylinder 17. The inside of the water sealing cylinder 17, the communication part 19, and the clearance gap 18 will communicate. The upper end of the gap 18 communicates with the third drainage channel 9, and the communicating part between the gap 18 and the third drainage channel 9 from the lower end of the washing station side sealing cylinder 17 positioned by being placed on the protrusion 45. The upper and lower lengths up to the lowermost end (that is, the upper end of the partition wall 16a between the gap 18 and the third drainage channel 9) are the sealing height, and the sealing height is determined by law. The height is 5 cm, or a length slightly higher than 5 cm. Therefore, the washing ground drain trap section 6 is configured by forming a water reservoir for sealing water communicating with the inside and outside of the washing place side sealing cylinder 17 through the communication portion 19.

  The upstream side of the third drainage channel 9 is lower than the upper end of the partition wall 16a between the bottomed cylindrical washing body side trap body 16 and a step 16b between the upstream side and the downstream side. Is formed, and the downstream side is lower than the upstream side.

  The bathtub 1 is placed on the bathtub floor pan 3, and in this case, the upper end of the bathtub-side sealed cylinder 25 is connected to the bottom end of the drain 51 provided on the bottom of the bathtub 1 via the seal member 52. It fits in the drainage hole 34 for bathtubs provided in the lid plate 32.

  In the drainage structure as described above, the drainage from the bathtub 1 has the largest drainage, the next largest drainage is the drainage from the washing floor pan 5, and the drainage from the bathtub floor pan 3 is the smallest. That is, in the bathtub floor pan 3, water that has entered the seal portion between the upper flange of the bathtub 1 and the wall panel is broken, or the boundary portion between the washing floor pan 5 and the bathtub floor pan 3 from the washing floor pan 5 side. Since the water that has entered the bathtub floor pan 3 through the dam 54 is drained, the amount of drainage is less than the drainage from the bathtub 1 and the washing floor pan 5.

  The drainage of the bathtub 1 flows from the bathtub drain trap portion 2 to the first drainage channel 7, flows from the outlet portion 12 at the downstream end of the first drainage channel 7 to the junction portion 10, and flows out to the drainage pipe 11. The wastewater from the washing floor floor pan 5 flows from the washing ground drain trap 6 to the third drainage channel 9, flows from the outlet 14 at the downstream end of the third drainage channel 9 to the junction 10, and flows out to the drainage pipe 11. The drainage of the bathtub floor pan 3 flows from the bathtub floor pan drain trap 4 to the second drainage channel 8, and flows from the outlet 13 at the downstream end of the second drainage channel 8 to the junction 10 to drain the pipe. It flows out to 11.

  In this way, in the present invention, the three different drains of the drainage of the bathtub 1, the drainage of the washing floor floor pan 5, and the drainage of the bathtub floor pan 3 are respectively separated into the bathtub drain trap part 2 and the bathtub floor pan drain trap part 4 respectively. In addition, by individually sealing the water in the washing place drain trap section 6, it is possible to reliably seal the drainage points at three different locations. In addition, each of the above-mentioned three drainage trap parts 2, the bathtub floor pan drainage trap part 4, and the washing place drainage trap part 6 is individually drained into first, second, and third drainage paths 8, which are individual drainage paths. Since the drainage flowing through the individual drainage channels is merged at one junction 10, the drainage from the bathtub 1, the drainage from the bathtub floor pan 3, and the drainage from the washing floor pan 5 are all reduced in pressure loss. It is possible to drain smoothly, and a large amount of drainage from the bathtub 1 flowing from the bathtub drain trap part 2 is difficult to flow back to the bathtub floor pan 3 side and the washing floor floor pan 5 side.

  By the way, when a large amount of drainage flows from the bathtub 1 through the bathtub drain trap section 2 to the drain pipe 11 from the junction section 10, the sealed water in the bathtub floor drain trap section 4 and the sealed water in the washing area drain trap section 6 are sealed. Trying to be pulled by negative pressure. In this case, since the drain trap part 4 for bathtub floor pans has a smaller capacity than the washing drain drain trap part 6, when negative pressure is applied, the sealed water is pulled out and flows out, and the sealed water is easily broken. . Therefore, in the present invention, as shown in FIG. 3, a large amount of drainage from the bathtub 1 is made by making the area of the water surface W1 of the downstream water pool portion 4d larger than the area of the water surface W2 of the upstream water pool portion 4c. Even if a negative pressure is generated when the water flows through the bathtub drain trap part 2 to the merge part 10, the water in the bathtub floor pan drain trap part 4 is hardly pulled.

  By the way, when the area of the water surface W1 of the downstream water reservoir 4d is increased in this way, when negative pressure is eliminated, drainage flowing into the junction 10 through the bathtub drain trap 2 is spread over the entire surface of the wide water W1. As a result, the amount of water flowing back to the bathtub floor pan drain trap portion 4 increases, and there is a possibility that the backflow water may spout from the upstream water pool portion 4c having a small water surface W2 to the bathtub floor pan 3 side.

  However, in the present invention, as described above, the inlet portion 8a is provided on the one side upper portion of the downstream water pool portion 4d, and the lower end position of the inlet portion 8a is the upper end at which the water surface W1 level of the downstream water pool portion 4d becomes the level. A discharge guide portion whose side portion at one end communicates with the inlet portion 8a and whose lower end opening 4g at the other end faces a part of the water surface W1 of the downstream water pool portion 4d through a small gap 4h. 4i is provided, so that when the negative pressure is eliminated, even if the drainage from the bathtub 1 tries to flow backward from the junction 10 into the drainage trap for the bathtub floor pan, Only a part of W1 flows backward from the discharge guide portion 4i facing the small gap 4h, and therefore the amount of water flowing backward is extremely small despite the large water surface W1 of the downstream water pool portion 4d.

  In this case, as shown in FIG. 3, since the opposing surface 4m facing the inlet portion 8a of the discharge guide portion 4i is inclined so as to be closer to the inlet portion 8a, the backflow water hits the opposing surface 4m. Since it is bounced back, backflow is prevented more.

  Further, since most of the water surface W1 of the downstream water reservoir 4d is covered by the ceiling 4k through the small gap 4j, the lower end opening 4g of the discharge guide portion 4i and the water surface W1 of the downstream water reservoir 4d Even if water that flows backward from the discharge guide portion 4i flows from the small gap 4h between them and tries to flow back to the entire surface of the water surface W1 of the downstream water pool portion 4d, a large portion of the water surface W1 of the downstream water pool portion 4d Since it is covered with the ceiling part 4k via 4j, the amount of water flowing back to the entire surface of the water surface W1 of the downstream-side water pool part 4d becomes extremely small, and the total backflow water is reduced.

  Further, as shown in FIG. 3, the depth from the water surface to the bottom 4f in the downstream water reservoir 4d is such that the portion facing the lower end opening 4g of the discharge guide 4i is shallower than the other portions. Since the water flowing backward from the lower end opening 4g of the discharge guide portion 4i hits the bottom portion 4f, the amount of water flowing backward can be reduced.

  In addition, as in the embodiment shown in the accompanying drawings, the junctions of the outlet portions 12, 13, and 14 on the downstream side of the first drainage channel 7, the second drainage channel 8, and the third drainage channel 9 arranged side by side in the lateral direction. By making the discharge direction of the drainage to 10 substantially parallel, the drainage flowing from the outlet of each drainage channel is difficult to flow back to another drainage channel, and further, FIGS. 9A, 9B, and 9C ), The discharge direction of the drainage of each outlet part 12, 13, 14 to the joining part 10 and the draining direction from the joining part 10 are configured to be the same so that the backflow is further increased. It becomes difficult to do.

  Furthermore, as shown in FIG. 9 (c), the outlet 12 of the first drainage channel 7 through which the largest amount of drainage flows among the three outlets 12, 13, and 14 arranged in parallel, and the most capacity. The washing area drain trap section 6 having a capacity larger than that of the bathtub floor pan drain trap section 4 is not adjacent to the outlet section 14 of the second drain path 8 connected to the small bathtub floor pan drain trap section 4. Since the outlet portion 14 of the third drainage channel 9 communicating with the drainage channel 9 is positioned, the drainage from the bathtub 1 flows backward when flowing from the outlet portion 12 of the first drainage channel 7 to the junction 10. Even if such a situation occurs, the second drainage channel that is far away will flow backward from the outlet 14 of the third drainage channel 9 communicating with the adjacent flushing drainage trap unit 6 to the washing plant drainage trap unit 6 side. It is possible to prevent backflow from the eight outlet portions 13. Therefore, it is prevented from flowing back to the bathtub floor pan 3 over the bathtub floor pan drain trap 4 having a small capacity.

  9C, the lower end of the outlet portion 13 of the second drainage channel 8 is positioned above the lower end of the outlet portion 14 of the third drainage channel 9, so that the drainage from the bathtub 1 can be performed. Even if a situation occurs in which a reverse flow occurs when flowing from the outlet portion 12 of the first drainage channel 7 to the merging portion 10, the washroom drainage trap from the outlet portion 14 of the third drainage channel 9 communicating with the washing plant drainage trap unit 6. Backflow to the section 6 side and backflow to the small-capacity bathtub floor pan drain trap section 4 side are prevented, and the counterflow flows back to the bathtub floor pan 3 beyond the small-capacity bathtub floor pan drain trap section 4. Is prevented. In this case, as shown in FIG. 9C, the outlet 12 of the first drainage channel 7 and the outlet 14 of the second drainage channel 8 connected to the bathtub floor pan drain trap 4 having the smallest capacity are provided. By being configured so that the outlet part 14 of the third drainage channel 9 communicating with the washing place drainage trap part 6 having a capacity larger than that of the bathtub floor pan drainage trap part 4 is located between the two, not adjacent to each other. Further backflow to the bathtub floor drain trap part 4 side can be prevented.

  In addition, since the lower end of the outlet portion 14 of the third drainage channel 9 is located below the lower end of the outlet portion 14 of the first drainage channel 7, the outlet portion 14 of the first drainage channel 7 reaches the junction 10 most. When drainage from the bathtub 1 is flowing while the drainage of the bathtub 1 having a large drainage flow is flowing, drainage from the washing floor pan 5 flows from the outlet 12 of the first drainage channel 7 to the junction 10. It is possible to smoothly flow from the outlet portion 14 to the joining portion 10 from a position slightly lower than the inflow position. Moreover, since the lower end of the outlet part 14 is located below the outlet part 12, the drainage of the bathtub 1 having the highest drainage flow from the outlet part 12 of the first drainage channel 7 to the joining part 10 flows to the joining part 10. However, in this case, since there is a step 16b between the upstream side and the downstream side of the third drainage channel 9, the backflow can be prevented. Since there is the partition wall 16a, the backflow can be prevented here.

  If the wall portion between the outlet portions 12 and 13 and the end portion of the wall between the outlet portions 13 and 14 in the merging portion 10 are formed of a soft material or a fin that is movable by hinge means, Can change the area of the outlet parts 12, 13, and 14, and the optimum flow rate can be adjusted. Also, when the drainage flow rate from a certain outlet part increases and the opening area increases, the opening area of the adjacent outlet part becomes larger. Since it becomes small, the backflow from the next exit part can be prevented further.

  In this case, you may make it close an exit part with a fin, when a positive pressure is applied, or at the time of backflow.

It is sectional drawing of the drainage structure of the bathroom of this invention. It is sectional drawing of the trap apparatus used for the same as the above. It is sectional drawing in the part which the water surface of the upstream water reservoir part of the drain trap part for bathtub floor pans of the trap apparatus used for the same as above, the water surface of a downstream water reservoir part, and the discharge guide part appear. (A) is the perspective view seen from the one side surface in the state which abbreviate | omitted the washing place side sealing cylinder in the trap apparatus same as the above, (b) is the perspective view seen from the other side surface side. It is a top view of the state which abbreviate | omitted the upper cylinder for bathtub side fixing, the bathtub side sealing cylinder, a main body cover, the washing top side fixing upper cylinder, and the washing place side sealing cylinder in the trap apparatus same as the above. It is the front view seen from the downstream of the trap apparatus same as the above. The bathtub side trap main body used for the same as the above is shown, (a) is a perspective view, (b) is a plan view, (c) is a front view, and (d) is a side view. It is a perspective view of the bathtub side sealing cylinder used for the same as the above. The washing place side trap main-body part used for the above is shown, (a) is a perspective view, (b) is a top view, (c) is a front view, (d) is a side view. It is a perspective view of the main body cover used for the same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bathtub 2 Bathtub drain trap part 3 Bath floor pan 4 Bath floor pan drain trap part 4a Sealed water pool 4c Upstream side water pool part 4d Downstream side water pool part 4e Communication part 4f Bottom part 4g Lower end opening part 4h Small gap 4i Discharge guide part 4j Small gap 4k Ceiling part 7 First drainage channel 8 Second drainage channel 8a Inlet part 10 Junction part 11 Drain pipe

Claims (3)

  A first drainage that includes a bathtub drain trap section through which drainage from the bathtub flows and a bathtub floor drain trap section through which drainage from the bathtub floor pan that installs the bathtub flows, and drainage discharged from the bathtub drain trap section flows And the second drainage channel through which drainage discharged from the bathtub floor pan drainage trap unit is joined at the junction and drained by a common drainpipe, sealed in the bathtub floor pan drain trap unit A water pool is provided, and the sealed water pool is connected to an upstream pool, a downstream pool, and a communication section that communicates the lower section of the upstream pool and the lower section of the downstream pool. And the area of the water surface of the downstream water pool portion is larger than the area of the water surface of the upstream water pool portion, and an inlet portion of the second drainage channel is provided on one side upper part of the downstream water pool portion. The lower end position of the part is the upper end position that becomes the water surface level of the downstream water reservoir, A discharge guide portion is provided in which a side portion at the end is connected to the inlet portion and a lower end opening at the other end is opposed to a part of the water surface of the downstream water pool portion through a small gap. The bathroom drainage structure.   The lower part of the discharge guide part is covered with a small gap above the part of the water surface of the downstream water reservoir that is covered with the ceiling part through a small gap and not covered with the ceiling part of the water surface of the downstream water reservoir part. 2. The bathroom drainage structure according to claim 1, wherein the openings are opposed to each other.   The depth from the water surface to the bottom in the downstream water pool is such that the part facing the lower end opening of the discharge guide is shallower than the other part. The bathroom drainage structure according to 2.

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